CN106936234A - Rotor and magneto - Google Patents
Rotor and magneto Download PDFInfo
- Publication number
- CN106936234A CN106936234A CN201511022585.8A CN201511022585A CN106936234A CN 106936234 A CN106936234 A CN 106936234A CN 201511022585 A CN201511022585 A CN 201511022585A CN 106936234 A CN106936234 A CN 106936234A
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- arc
- shaped permanent
- shaped
- rotor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005291 magnetic effect Effects 0.000 claims abstract description 82
- 238000009434 installation Methods 0.000 claims description 22
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 4
- 230000005347 demagnetization Effects 0.000 abstract description 13
- 230000006698 induction Effects 0.000 abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000005389 magnetism Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 229910052761 rare earth metal Inorganic materials 0.000 description 3
- 150000002910 rare earth metals Chemical class 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910001172 neodymium magnet Inorganic materials 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention provides a kind of rotor, including rotor core and it is embedded in multigroup permanent magnet of rotor core, every group of permanent magnet includes more than two arc-shaped permanent magnets, the convex surface of more than two arc-shaped permanent magnets is oppositely arranged to form a magnetic pole, and the polarity on the convex surface of more than two arc-shaped permanent magnets is identical；In two adjacent groups permanent magnet, the opposite polarity of two neighboring arc-shaped permanent magnet.Present invention also offers a kind of magneto.Rotor of the invention and magneto, improve the anti-demagnetization capability in easily demagnetization region, solve the problems, such as local demagnetization, so that the overall reliability for improving motor；And the table magnetic surface product of permanent magnet under each magnetic pole is improve, the air-gap induction and output torque of motor is improved, the performance of motor is further improved.
Description
Technical field
The present invention relates to technical field of motors, more particularly to a kind of rotor and magneto.
Background technology
In order to reduce using the magneto cost of rare-earth Nd-Fe-B, typically can be using the ferrite of non-rare earth forever
Magnet replaces Nd-Fe-B permanent magnet, and the permanent magnet of general motor generally uses built-in single-layer arcuate knot
Structure.But because the magnetic property of ferrite permanent magnet is poor so that the magneto of the rotor structure has efficiency
It is relatively low, the problems such as easily demagnetize.
The content of the invention
In view of the present situation of prior art, it is an object of the invention to provide a kind of rotor and magneto,
To solve the problems, such as that motor easily demagnetizes, so as to improve the reliability of motor.
To achieve the above object, the present invention is adopted the following technical scheme that：
A kind of rotor, including：
Rotor core；And
Multigroup permanent magnet of the rotor core is embedded in, every group of permanent magnet includes more than two arcuate permanent magnetics
Body, the convex surface of more than two arc-shaped permanent magnets is oppositely arranged to form a magnetic pole, and more than two
The polarity on the convex surface of arc-shaped permanent magnet is identical；
In permanent magnet described in two adjacent groups, the opposite polarity of two neighboring arc-shaped permanent magnet.
In one embodiment of the invention, more than two arc-shaped permanent magnet splicings in every group of permanent magnet
Form V-arrangement or U-shaped.
In one embodiment of the invention, every group of permanent magnet includes two arc-shaped permanent magnets, respectively
First arc-shaped permanent magnet and the second arc-shaped permanent magnet；
First arc-shaped permanent magnet and second arc-shaped permanent magnet are respectively by the axis hole on the rotor core
Extend to the outer surface of the rotor core, the convex surface of first arc-shaped permanent magnet is with second arc forever
The convex surface of magnet is oppositely arranged to form V-arrangement, and the opening of the V-arrangement is towards the outer surface of the rotor core.
In one embodiment of the invention, every group of permanent magnet includes more than three arc-shaped permanent magnets, three
Individual the above arc-shaped permanent magnet is sequentially spliced to form U-shaped, and the opening of the U-shaped is towards the rotor core
Outer surface.
In one embodiment of the invention, permanent magnet described in every group includes three arc-shaped permanent magnets, respectively
3rd arc-shaped permanent magnet, the 4th arc-shaped permanent magnet and the 5th arc-shaped permanent magnet；
Wherein, the outer surface convex surface facing the rotor core of the 3rd arc-shaped permanent magnet is set, and the described 4th
The two ends that arc-shaped permanent magnet is divided into the 3rd arc-shaped permanent magnet with the 5th arc-shaped permanent magnet form U
Shape, the 4th arc-shaped permanent magnet is oppositely arranged with the convex surface of the 5th arc-shaped permanent magnet.
In one embodiment of the invention, the arc length on the convex surface of the 4th arc-shaped permanent magnet is more than or equal to
The arc length on the convex surface of the 3rd arc-shaped permanent magnet；
Convex surface of the arc length on the convex surface of the 5th arc-shaped permanent magnet more than or equal to the 3rd arc-shaped permanent magnet
Arc length.
In one embodiment of the invention, the magnetic property of the 4th arc-shaped permanent magnet is less than the 3rd arc
The magnetic property of shape permanent magnet；
Magnetic property of the magnetic property of the 5th arc-shaped permanent magnet less than the 3rd arc-shaped permanent magnet.
In one embodiment of the invention, first arc-shaped permanent magnet and second arc-shaped permanent magnet it
Between included angle A or included angle A between the 4th arc-shaped permanent magnet and the 5th arc-shaped permanent magnet meet
Following relation：
Wherein, p represents the number of poles of magneto.
In one embodiment of the invention, the center of circle of the center of circle on the convex surface of the arc-shaped permanent magnet and concave surface it
Between there is predeterminable range.
In one embodiment of the invention, the thickness of the arc-shaped permanent magnet is from the arc-shaped permanent magnet
The heart is gradually reduced to two ends.
In one embodiment of the invention, along the axle of the rotor core on the outer surface of the rotor core
It is fluted to opening up, the groove be placed in permanent magnet described in two adjacent groups adjacent two arc-shaped permanent magnet it
Between.
In one embodiment of the invention, it is provided with the rotor core for installing multigroup permanent magnetism
The installation portion of body, the electric machine also includes being arranged on the outer surface of the rotor core and the installation portion
Between every magnetic bridge, thickness of the width every magnetic bridge more than or equal to a piece of silicon steel sheet.
Present invention also offers a kind of magneto, including motor stator and the motor described in any of the above-described
Rotor.
The beneficial effects of the invention are as follows：
Rotor of the invention and magneto, one group is formed by using more than two arc-shaped permanent magnets
Permanent magnet, the convex surface of more than two arc-shaped permanent magnets is oppositely arranged to form a magnetic pole, so that by many
The mode of the arc-shaped permanent magnet splicing of segmentation improves the anti-demagnetization capability in easily demagnetization region, solves local moving back
The problem of magnetic, so that the overall reliability for improving motor.Meanwhile, by using the convex surface of arc-shaped permanent magnet
Arc length be more than concave surface arc length the characteristics of, by the convex surface of more than two arc-shaped permanent magnets be oppositely arranged with provide
One magnetic flux of magnetic pole, so as to improve the product of the permanent magnetism body surface magnetic surface under each magnetic pole, improves motor
Air-gap induction and output torque, further improve the performance of motor.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of rotor of the invention；
Fig. 2 is the partial enlarged drawing of rotor in Fig. 1；
Fig. 3 is the structural representation of another embodiment of rotor of the invention；
Fig. 4 is the partial enlarged drawing of rotor in Fig. 3；
Fig. 5 is the schematic diagram of the embodiment of arc-shaped permanent magnet one in rotor of the invention；
Fig. 6 is the permanent magnet consumption of the permanent magnet consumption with traditional rotor of rotor of the invention
Comparison diagram；
Fig. 7 air-gap induction of rotor of the invention and the air-gap induction of traditional rotor
Comparison diagram；
Fig. 8 is the contrast of the output torque with the output torque of traditional rotor of rotor of the invention
Figure；
Fig. 9 is magnetic Miyun figure of traditional rotor under specific demagnetizing field；
Figure 10 is the magnetic density cloud atlas that rotor of the invention is under same demagnetizing field.
Specific embodiment
In order that technical scheme is clearer, below in conjunction with accompanying drawing, to rotor of the invention
And magneto is described in further detail.It should be appreciated that specific embodiment described herein is only used to
Explain that the present invention is not intended to limit the present invention.
Referring to Fig. 1 and Fig. 3, the invention provides a kind of rotor, including rotor core 100, it is embedded in
Multigroup permanent magnet and rotating shaft (not shown) of rotor core.Wherein, it is provided with multiple on rotor core 100
Installation portion 110 for installing multigroup permanent magnet, installation portion 110 can be to be arranged on rotor core 100
Groove or through hole.In the present embodiment, rotor core 100 is sequentially overlapped by silicon steel sheet and is formed, installation portion 110
It can be the groove being arranged on rotor core 100.It is additionally provided with for installing rotating shaft on rotor core 100
Axis hole 120, wherein, axis hole 120 is placed in the center of rotor core, and multiple installation portions 110 are uniformly point
Cloth is between the inner surface of rotor core 100 and outer surface.
Multigroup permanent magnet is correspondingly arranged in multiple installation portions 110, i.e., every group permanent magnet is placed in same installation portion
In 110.In the present embodiment, each installation portion 110 includes more than two deep-slotted chip breakers, and two adjacent arcs
Shape groove is interconnected and forms an installation portion 110.
Every group of permanent magnet includes more than two arc-shaped permanent magnets, the convex surface phase of more than two arc-shaped permanent magnets
The group number that a magnetic pole, i.e. permanent magnet are formed to setting is equal to the number of poles of the magneto.In the present embodiment,
Arc-shaped permanent magnet uses non-rare earth permanent magnets.More than two arc-shaped permanent magnets is convex in every group of permanent magnet
The polarity in face is identical, and accordingly, the polarity of the concave surface of more than two arc-shaped permanent magnets is also identical, so,
By using arc-shaped permanent magnet, and using arc-shaped permanent magnet convex surface arc length more than concave surface arc length the characteristics of,
The permanent magnetism body surface magnetic surface product under a magnetic pole is improved, so as to improve air-gap induction and the output of motor
Torque, further improves the performance of motor.
In one embodiment of the invention, more than two arc-shaped permanent magnets are spliced to form V in every group of permanent magnet
Shape or U-shaped, are accumulated with increasing same magnetic pole following table magnetic surface.The opening of V-arrangement or U-shaped is towards rotor core 100
Outer surface set, more than two arc-shaped permanent magnets convex surface facing V-arrangement or the inside of U-shaped, and two
The polarity all same on the convex surface of above arc-shaped permanent magnet.
In two adjacent groups permanent magnet, two adjacent opposite polarities of arc-shaped permanent magnet.Specifically, it is adjacent
The concave surface of two arc-shaped permanent magnets is oppositely arranged, and the concave surface of two neighboring arc-shaped permanent magnet opposite polarity.
The opposite polarity of two adjacent groups permanent magnet is so caused, is handed over N poles and S poles so as to meet two neighboring magnetic pole
The characteristics of for distribution.In the present invention, easily demagnetization is improved by way of the arc-shaped permanent magnet of multisection type splices
The anti-demagnetization capability in region, solves the problems, such as local demagnetization, so that the overall reliability for improving motor.
Further, in rotor core cross-sectional direction, multigroup permanent magnet is uniformly distributed in rotor core 100
On, and the setting of multigroup permanent magnet Central Symmetry.So so that the Distribution of Magnetic Field of the rotor is uniform, with
Ensure the rotor can stable operation, so as to ensure the performance of motor.
As shown in fig. 6, the single-layer arcuate profile (dashed region) in figure is used to represent conventional motors rotor
Permanent magnet consumption, the motor that the U shape profile that three arc-shaped permanent magnets are spliced is used to represent in the present invention turns
The permanent magnet consumption of son.It can be seen that the permanent magnet consumption of rotor of the invention apparently higher than
The permanent magnetism consumption of traditional rotor, so as to significantly increase the permanent magnet consumption in same magnetic pole.
As shown in fig. 7, curve L1 represents the air-gap induction of traditional rotor, curve L2 represents this
The air-gap induction of the rotor of invention.It can be seen that the air gap magnetic of rotor of the invention
Density improves more than 50% relative to the air-gap induction of traditional rotor.
As shown in figure 8, curve S1 represents the output torque of traditional rotor, curve S2 represents this hair
The output torque of bright rotor.It can be seen that the output torque of rotor of the invention is carried
Rise more than 40%.
Fig. 9 and Figure 10 are respectively traditional rotor with electronics rotor of the invention under same demagnetizing field
Magnetic Miyun figure, by comparison diagram 9 and Figure 10, rotor of the invention turns relative to traditional motor
Son has stronger anti-demagnetization capability, solves the problems, such as local demagnetization, thus it is overall improve motor can
By property.
In one embodiment of the invention, as shown in figure 1, every group of permanent magnet 200 includes two arcs forever
Magnet, respectively the first arc-shaped permanent magnet 210 and the second arc-shaped permanent magnet 220, accordingly, installation portion 110
V-shaped, including two interconnected deep-slotted chip breakers, two arc-shaped permanent magnets are respectively placed in two deep-slotted chip breakers.
First arc-shaped permanent magnet 210 and the second arc-shaped permanent magnet 220 are respectively by the outer circumferential rotor core of axis hole 120
100 outer surface extends, the convex surface phase of the convex surface of the first arc-shaped permanent magnet 210 and the second arc-shaped permanent magnet 220
V-arrangement, the i.e. convex surface of the convex surface of the first arc-shaped permanent magnet 210 and the second arc-shaped permanent magnet 220 are formed to setting
Towards the inside of V-arrangement, the opening of V-arrangement is towards the outer surface of rotor core 100.
Fig. 2 is the partial enlarged drawing of Fig. 1, and it includes two groups of permanent magnets, wherein, positioned at the first of left side
In group permanent magnet 200, the polarity on the convex surface of the first arc-shaped permanent magnet 210 and the second arc-shaped permanent magnet 220
The polarity on convex surface is identical, and is N poles, and the polarity of two concave surfaces of arc-shaped permanent magnet is identical and is S poles,
So cause that first group of permanent magnet 200 is S poles relative to other set of permanent magnets general performances.Positioned at right side
In second group of permanent magnet 200, the polarity on two convex surfaces of arc-shaped permanent magnet is identical, and is S poles, two
The opposite polarity of the concave surface of arc-shaped permanent magnet is identical and is N poles, so that this group of permanent magnet is relative to it
His set of permanent magnets general performance is N poles.Therefore, the second arc-shaped permanent magnet 220 in first group of permanent magnet 200
It is adjacent with the first arc-shaped permanent magnet 210 in second group of permanent magnet 200, and both opposite polarities.So
So that the opposite polarity of two adjacent groups permanent magnet, is alternately divided so as to meet two neighboring magnetic pole with N poles and S poles
The characteristics of cloth.
As shown in figure 1, the included angle A between the first arc-shaped permanent magnet 210 and the second arc-shaped permanent magnet 220 expires
The following relation of foot：Wherein p represents the number of poles of magneto.Wherein, included angle A
Represent in the range of same magnetic pole, the throwing of the table magnetic surface product of the V-type set of permanent magnets of the magnetic pole on rotor outer circle
The size of shadow.Above range is set to by by included angle A, is accumulated with reaching larger table magnetic surface.
In another embodiment of the present invention, every group of permanent magnet includes the arc-shaped permanent magnet of more than three, three
Individual above arc-shaped permanent magnet is sequentially spliced to form U-shaped, and the convex surface of the arc-shaped permanent magnet of more than three is towards U
The inside of shape is set, and the opening of U-shaped is towards the outer surface of rotor core 100.Now, installation portion 110
Take the shape of the letter U, including the deep-slotted chip breaker of more than three, the arc-shaped permanent magnet of more than three is correspondingly arranged in deep-slotted chip breaker.
As shown in figure 3, every group of permanent magnet 500 can include three arc-shaped permanent magnets, respectively the 3rd arc
Permanent magnet 510, the 4th arc-shaped permanent magnet 520 and the 5th arc-shaped permanent magnet 530.Now, installation portion 110
Take the shape of the letter U, formed by the deep-slotted chip breaker of three connections, three arc-shaped permanent magnets are respectively placed in three deep-slotted chip breakers.
Wherein, convex surface facing the outer surface of rotor core 100, the 3rd arc is forever for the 3rd arc-shaped permanent magnet 510
The concave surface of magnet is set towards axis hole 120, i.e. the bending direction and rotor core of the 3rd arc-shaped permanent magnet 510
100 circumferencial direction is consistent.4th arc-shaped permanent magnet 520 and the 5th arc-shaped permanent magnet 530 are divided into the 3rd arc
The two ends of shape permanent magnet 510, three arc-shaped permanent magnets are spliced to form U-shaped.Wherein, the 4th arc-shaped permanent magnet
520 are oppositely arranged with the convex surface of the 5th arc-shaped permanent magnet 530.So, the 3rd arc-shaped permanent magnet 510 is placed in U
The bottom of shape, the 4th arc-shaped permanent magnet 520 and the 5th arc-shaped permanent magnet 530 are relative to the first arc-shaped permanent magnet
The centrosymmetric two ends for being arranged at the 3rd arc-shaped permanent magnet 510, and the convex surface of three arc-shaped permanent magnets is equal
Towards the inside of U-shaped, so it is beneficial to increase the table magnetic surface product of the permanent magnet under same magnetic pole, improves motor
Torque and air-gap induction so that the performance of lifting motor.
Fig. 4 is the partial enlarged drawing of Fig. 3, and it includes two groups of permanent magnets.Wherein, it is placed in first group of left side
In permanent magnet 500, the polarity on three convex surfaces of arc-shaped permanent magnet is identical and is N poles, three arcuate permanent magnetics
The polarity of the concave surface of body is identical and is S poles, and so, this group of permanent magnet is relative to other set of permanent magnets entirety
Show as S poles.It is placed in second group of permanent magnet 500 on right side, three polarity on the convex surface of arc-shaped permanent magnet
Identical and be S poles, the polarity of three concave surfaces of arc-shaped permanent magnet is identical and is N poles, and so the group is forever
Magnet is N poles relative to other set of permanent magnets general performances.Therefore, the 5th in first group of permanent magnet 500
The pole of the concave surface of the 4th arc-shaped permanent magnet 520 in the concave surface of arc-shaped permanent magnet 530 and second group of permanent magnet 500
Property is opposite.The opposite polarity of two adjacent groups permanent magnet is so caused, so as to meet two neighboring magnetic pole with N poles
The characteristics of being alternately distributed with S poles.
Included angle A between 4th arc-shaped permanent magnet 520 and the 5th arc-shaped permanent magnet 530 meets following relation：Wherein p represents the number of poles of magneto.Wherein, included angle A is represented in same magnetic
In the range of pole, the size of the projection of the table magnetic surface product of the U-shaped set of permanent magnets of the magnetic pole on rotor outer circle.It is logical
Cross and included angle A is set to above range, accumulated with reaching larger table magnetic surface.
As a further improvement, the arc length on the convex surface of the 4th arc-shaped permanent magnet 520 is more than or equal to the 3rd arc
The arc length on the convex surface of shape permanent magnet 510；The arc length on the convex surface of the 5th arc-shaped permanent magnet 530 is more than or equal to the
The arc length on the convex surface of three arc-shaped permanent magnets 510.So, by by the convex surface of the 3rd arc-shaped permanent magnet 510
Arc length be set smaller than or equal to the 4th arc-shaped permanent magnet 520 convex surface arc length and the 5th arc-shaped permanent magnet
The arc length on 530 convex surface, can lift the anti-demagnetization capability of the rotor, it is to avoid local demagnetization, so as to carry
The reliability of motor high.
In the present embodiment, the 4th arc-shaped permanent magnet 520 is identical with the structure of the 5th arc-shaped permanent magnet 530,
I.e. the arc length on the convex surface of the 4th arc-shaped permanent magnet 520 is equal to the arc length on the convex surface of the 5th arc-shaped permanent magnet 530,
Procedure such that it is able to the simplified set of permanent magnets etc..Certainly, in other embodiments, the 4th arc is forever
Magnet 520 can also be different from the structure of the 5th arc-shaped permanent magnet 530.
In one embodiment of the invention, the magnetic property of the 4th arc-shaped permanent magnet 520 is less than the 3rd arc forever
The magnetic property of magnet 510；The magnetic property of the 5th arc-shaped permanent magnet 530 is less than the 3rd arc-shaped permanent magnet 510
Magnetic property.Wherein, magnetic property herein refer to the remanent magnetism of arc-shaped permanent magnet, coercivity, HCJ with
And the performance indications such as magnetic energy product.So, it is set above by by the magnetic property of the 3rd arc-shaped permanent magnet 510
The magnetic property of the 4th arc-shaped permanent magnet 520 and the magnetic property of the 5th arc-shaped permanent magnet 530, can lift this
The anti-demagnetization capability of rotor, it is to avoid local demagnetization, so as to improve the reliability of motor.In this implementation
In example, magnetic property and the 5th arc-shaped permanent magnet 530 of the 4th arc-shaped permanent magnet 520 can use magnetic property phase
Same permanent magnet, it would however also be possible to employ the different permanent magnet of magnetic property.
In other embodiments, every group of permanent magnet can also be including the arc-shaped permanent magnet of more than four.For example,
Every group of permanent magnet can include four arc-shaped permanent magnets, and four arc-shaped permanent magnets are spliced to form U-shaped, U successively
The bottom of shape is in turn connected to form by two arc-shaped permanent magnets, and the side wall of U-shaped is respectively by an arc-shaped permanent magnet
Formed, towards the inside setting of U-shaped, the opening of U-shaped is towards rotor iron for four convex surfaces of arc-shaped permanent magnet
The lateral surface of core.
In other embodiments, every group of permanent magnet can also include five arc-shaped permanent magnets, five arcuate permanent magnetics
Body is spliced into U-shaped successively, and the bottom of U-shaped is made up of one of arc-shaped permanent magnet, the side wall difference of U-shaped
It is spliced to form by two arc-shaped permanent magnets, five convex surfaces of arc-shaped permanent magnet are set towards the inside of U-shaped,
Lateral surface of the opening of U-shaped towards rotor core.Or, the bottom of U-shaped by three arc-shaped permanent magnets successively
It is spliced to form, the side wall of U-shaped is formed by an arc-shaped permanent magnet respectively, and the convex surface of five arc-shaped permanent magnets is equal
Set towards the inside of U-shaped, the lateral surface of the opening of U-shaped towards rotor core.Certainly, every group of permanent magnet
The quantity of middle arc-shaped permanent magnet can also be other quantity, and such as five with first-class, no longer exhaustion herein.
In one embodiment of the invention, the center of circle of the center of circle on the convex surface of each arc-shaped permanent magnet and concave surface it
Between there are predeterminable range, i.e. arc-shaped permanent magnet convex surface arc the center of circle and concave surface arc the center of circle not
With one heart.As shown in figure 5, it is O1 that the convex surface of arc-shaped permanent magnet refers to the center of circle, radius is the arcwall face of Rout,
It is O2 that the concave surface of arc-shaped permanent magnet refers to the center of circle, and radius is the arcwall face of Rin, and center of circle O1 and center of circle O2
The distance between be h.In the present embodiment, thickness values of the height h less than arc-shaped permanent magnet.Traditional arc
The interior outer arc of permanent magnet is that concentric arc, i.e. arc-shaped permanent magnet are a part for donut.And in the present invention,
Concave surface arc length and the setting of convex surface arc length decentraction by arc-shaped permanent magnet, further lift the rotor
Anti- demagnetization capability, it is to avoid local demagnetization, so as to improve the reliability of motor.
Further, the thickness of each arc-shaped permanent magnet is from the center of the arc-shaped permanent magnet to the arcuate permanent magnetic
The two ends of body are gradually reduced, therefore, the thickness of the centre of the arc-shaped permanent magnet is more than arc-shaped permanent magnet two ends
Thickness.So, by the way that using the thin arc-shaped permanent magnet in thick middle, two ends, the rotor can be lifted
Anti- demagnetization capability, it is to avoid local demagnetization, so as to improve the reliability of motor.
In one embodiment of the invention, along the axle of rotor core 100 on the outer surface of rotor core 100
To opening up fluted 300, the groove 300 is placed between two adjacent groups permanent magnet, specifically, the groove 300
It is placed between adjacent two arc-shaped permanent magnet of two adjacent groups permanent magnet, for separating different magnetic poles.Its
In, the quantity of groove 300 is equal to the group number of permanent magnet, that is, the quantity of groove 300 is equal to the number of poles of motor.
In the present embodiment, the quantity of groove 300 is 6.
As a further improvement, the rotor every magnetic bridge 400 also including that every magnetic bridge 400, should be arranged at and turn
Between the outer surface of sub- iron core 100 and installation portion 110.Specifically, installation portion should be arranged at every magnetic bridge 400
Between 110 end and the outer surface of rotor core 100.In the present embodiment, installation portion 110 by two with
On deep-slotted chip breaker be spliced to form V-arrangement or U-shaped, the end of installation portion 110 refers to installation portion 110 and rotor iron
The adjoining one end in the outer surface of core 100.As shown in figures 1 and 3, the width b every magnetic bridge 400 is more than
Or equal to the thickness of the silicon steel sheet used by a piece of rotor.By setting every magnetic bridge 400, it is possible to reduce leakage field,
The performance of further lifting motor.Meanwhile, can ensure that rotor has enough mechanical strengths every magnetic bridge 400,
Rotor deformation in the process of running is avoided, so as to improve the reliability of motor.
In the present embodiment, at least there are two due to V-arrangement installation portion or U-shaped installation portion 110 with rotor iron
The adjoining end in the outer surface of core 100, therefore quantity every magnetic bridge 400 should be greater than or equal to set of permanent magnets
Several 2 times, that is to say, that every 2 times of quantity more than or equal to the number of poles of magneto of magnetic bridge 400.
Present invention also offers a kind of magneto, including described in motor stator and any of the above-described embodiment
Rotor.
Rotor of the invention and magneto, one group is formed by using more than two arc-shaped permanent magnets
Permanent magnet, the convex surface of more than two arc-shaped permanent magnets is oppositely arranged to form a magnetic pole, so that by many
The mode of the arc-shaped permanent magnet splicing of segmentation improves the anti-demagnetization capability in easily demagnetization region, solves local moving back
The problem of magnetic, so that the overall reliability for improving motor.Meanwhile, by using the convex surface of arc-shaped permanent magnet
Arc length be more than concave surface arc length the characteristics of, by the convex surface of more than two arc-shaped permanent magnets be oppositely arranged with provide
One magnetic flux of magnetic pole, so as to improve the product of the permanent magnetism body surface magnetic surface under each magnetic pole, improves motor
Air-gap induction and output torque, further improve the performance of motor.
Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed,
But therefore can not be interpreted as the limitation to the scope of the claims of the present invention.It should be pointed out that for this area
Those of ordinary skill for, without departing from the inventive concept of the premise, can also make it is some deformation and
Improve, these belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended
Claim is defined.
Claims (13)
1. a kind of rotor, it is characterised in that including：
Rotor core (100)；And
Multigroup permanent magnet of the rotor core is embedded in, every group of permanent magnet includes more than two arcuate permanent magnetics
Body, the convex surface of more than two arc-shaped permanent magnets is oppositely arranged to form a magnetic pole, and more than two
The polarity on the convex surface of arc-shaped permanent magnet is identical；
In permanent magnet described in two adjacent groups, the opposite polarity of two neighboring arc-shaped permanent magnet.
2. rotor according to claim 1, it is characterised in that two in every group of permanent magnet
Arc-shaped permanent magnet above is spliced to form V-arrangement or U-shaped.
3. rotor according to claim 1, it is characterised in that every group of permanent magnet includes two
Individual arc-shaped permanent magnet, respectively the first arc-shaped permanent magnet (210) and the second arc-shaped permanent magnet (220)；
First arc-shaped permanent magnet (210) and second arc-shaped permanent magnet (220) are respectively by described turn
Axis hole (120) on sub- iron core (100) extends to the outer surface of the rotor core (100), and described the
The convex surface of one arc-shaped permanent magnet (210) is oppositely arranged shape with the convex surface of second arc-shaped permanent magnet (220)
Forming V-shape, the outer surface of the opening of the V-arrangement towards the rotor core (100).
4. rotor according to claim 1, it is characterised in that every group of permanent magnet includes three
Individual above arc-shaped permanent magnet, three the above arc-shaped permanent magnets are sequentially spliced to form U-shaped, the U-shaped
It is open towards the outer surface of the rotor core.
5. rotor according to claim 4, it is characterised in that permanent magnet described in every group includes three
Individual arc-shaped permanent magnet, respectively the 3rd arc-shaped permanent magnet (510), the 4th arc-shaped permanent magnet (520) and
Five arc-shaped permanent magnets (530)；
Wherein, the outer surface convex surface facing the rotor core (100) of the 3rd arc-shaped permanent magnet (510)
Set, the 4th arc-shaped permanent magnet (520) is divided into described with the 5th arc-shaped permanent magnet (530)
The two ends of the 3rd arc-shaped permanent magnet (510) form U-shaped, the 4th arc-shaped permanent magnet (520) with it is described
The convex surface of the 5th arc-shaped permanent magnet (530) is oppositely arranged.
6. rotor according to claim 5, it is characterised in that the 4th arc-shaped permanent magnet (520)
Convex surface arc length more than or equal to the 3rd arc-shaped permanent magnet (510) convex surface arc length；
The arc length on the convex surface of the 5th arc-shaped permanent magnet (530) is more than or equal to the 3rd arc-shaped permanent magnet
(510) arc length on convex surface.
7. rotor according to claim 5, it is characterised in that the 4th arc-shaped permanent magnet (520)
Magnetic property less than the 3rd arc-shaped permanent magnet (510) magnetic property；
The magnetic property of the 5th arc-shaped permanent magnet (530) is less than the 3rd arc-shaped permanent magnet (510)
Magnetic property.
8. the rotor according to claim 3 or 5, it is characterised in that first arcuate permanent magnetic
Included angle A or the 4th arcuate permanent magnetic between body (210) and second arc-shaped permanent magnet (220)
Included angle A between body (520) and the 5th arc-shaped permanent magnet (530) meets following relation：
Wherein, p represents the number of poles of magneto.
9. the rotor according to claim 1-7 any one claims, it is characterised in that described
There is predeterminable range between the center of circle on the convex surface of arc-shaped permanent magnet and the center of circle of concave surface.
10. the rotor according to claim 1-7 any one claims, it is characterised in that described
The thickness of arc-shaped permanent magnet is gradually reduced from the center of the arc-shaped permanent magnet to two ends.
11. rotor according to claim 1-7 any one claims, it is characterised in that described
Open up fluted along the axial direction of the rotor core on the outer surface of rotor core, the groove is placed in adjacent two
Between adjacent two arc-shaped permanent magnet of the group permanent magnet.
12. rotor according to claim 1-7 any one claims, it is characterised in that described
The installation portion (110) for installing multigroup permanent magnet, the motor are provided with rotor core (100)
Device also includes being arranged between the outer surface of the rotor core (100) and the installation portion (110)
Every magnetic bridge, thickness of the width every magnetic bridge more than or equal to a piece of silicon steel sheet.
13. a kind of magnetoes, it is characterised in that including motor stator and claim any one of 1-12
Described rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511022585.8A CN106936234A (en) | 2015-12-29 | 2015-12-29 | Rotor and magneto |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511022585.8A CN106936234A (en) | 2015-12-29 | 2015-12-29 | Rotor and magneto |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106936234A true CN106936234A (en) | 2017-07-07 |
Family
ID=59441750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511022585.8A Pending CN106936234A (en) | 2015-12-29 | 2015-12-29 | Rotor and magneto |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106936234A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107370269A (en) * | 2017-09-15 | 2017-11-21 | 青岛理工大学 | Permanent magnet rotor and asynchronous starting permanent magnet synchronous motor |
| CN109638998A (en) * | 2018-12-04 | 2019-04-16 | 珠海格力电器股份有限公司 | Motor rotor, motor and electric automobile |
| CN110336396A (en) * | 2019-07-19 | 2019-10-15 | 合肥巨一动力系统有限公司 | A kind of non-rare-earth electric motor rotor structure of new-energy automobile |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07154935A (en) * | 1993-11-29 | 1995-06-16 | Japan Servo Co Ltd | Permanent magnet rotating electric machine |
| JP2002084722A (en) * | 2000-09-06 | 2002-03-22 | Fujitsu General Ltd | Permanent magnet motor |
| JP2010088169A (en) * | 2008-09-30 | 2010-04-15 | Fujitsu General Ltd | Electric motor |
| CN101944788A (en) * | 2010-07-06 | 2011-01-12 | 东元总合科技（杭州）有限公司 | Rotor of high-power permanent magnet motor and permanent magnet synchronous wind-driven generator using same |
| JP2011041446A (en) * | 2009-08-18 | 2011-02-24 | Yaskawa Electric Corp | Method of manufacturing rotor core, rotor core manufactured by the manufacturing method, and embedded magnet type rotary electric machine having the rotor core |
| WO2013150652A1 (en) * | 2012-04-06 | 2013-10-10 | 三菱電機株式会社 | Rotor and electric motor having embedded permanent magnet |
| US20130313936A1 (en) * | 2012-05-25 | 2013-11-28 | Jtekt Corporation | Rotor and motor including rotor |
| WO2014045445A1 (en) * | 2012-09-24 | 2014-03-27 | 三菱電機株式会社 | Permanent magnet-embedded electric motor |
| JP2014150695A (en) * | 2013-02-04 | 2014-08-21 | Toshiba Carrier Corp | Permanent magnet motor, sealed compressor and refrigeration cycle device |
| CN204205762U (en) * | 2014-09-30 | 2015-03-11 | 华擎机械工业股份有限公司 | Rotor structure and apply the integral type starter generator of this rotor structure |
| US20150137629A1 (en) * | 2013-11-18 | 2015-05-21 | Steering Solutions Ip Holding Corporation | Low cost permanent magnet motor for an electric power steering system |
| WO2015097767A1 (en) * | 2013-12-25 | 2015-07-02 | 株式会社日立製作所 | Permanent magnet type rotating electrical machine |
| CN205377491U (en) * | 2015-12-29 | 2016-07-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Electric motor rotor and permanent -magnet machine |
-
2015
- 2015-12-29 CN CN201511022585.8A patent/CN106936234A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07154935A (en) * | 1993-11-29 | 1995-06-16 | Japan Servo Co Ltd | Permanent magnet rotating electric machine |
| JP2002084722A (en) * | 2000-09-06 | 2002-03-22 | Fujitsu General Ltd | Permanent magnet motor |
| JP2010088169A (en) * | 2008-09-30 | 2010-04-15 | Fujitsu General Ltd | Electric motor |
| JP2011041446A (en) * | 2009-08-18 | 2011-02-24 | Yaskawa Electric Corp | Method of manufacturing rotor core, rotor core manufactured by the manufacturing method, and embedded magnet type rotary electric machine having the rotor core |
| CN101944788A (en) * | 2010-07-06 | 2011-01-12 | 东元总合科技（杭州）有限公司 | Rotor of high-power permanent magnet motor and permanent magnet synchronous wind-driven generator using same |
| WO2013150652A1 (en) * | 2012-04-06 | 2013-10-10 | 三菱電機株式会社 | Rotor and electric motor having embedded permanent magnet |
| US20130313936A1 (en) * | 2012-05-25 | 2013-11-28 | Jtekt Corporation | Rotor and motor including rotor |
| WO2014045445A1 (en) * | 2012-09-24 | 2014-03-27 | 三菱電機株式会社 | Permanent magnet-embedded electric motor |
| JP2014150695A (en) * | 2013-02-04 | 2014-08-21 | Toshiba Carrier Corp | Permanent magnet motor, sealed compressor and refrigeration cycle device |
| US20150137629A1 (en) * | 2013-11-18 | 2015-05-21 | Steering Solutions Ip Holding Corporation | Low cost permanent magnet motor for an electric power steering system |
| WO2015097767A1 (en) * | 2013-12-25 | 2015-07-02 | 株式会社日立製作所 | Permanent magnet type rotating electrical machine |
| CN204205762U (en) * | 2014-09-30 | 2015-03-11 | 华擎机械工业股份有限公司 | Rotor structure and apply the integral type starter generator of this rotor structure |
| CN205377491U (en) * | 2015-12-29 | 2016-07-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Electric motor rotor and permanent -magnet machine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107370269A (en) * | 2017-09-15 | 2017-11-21 | 青岛理工大学 | Permanent magnet rotor and asynchronous starting permanent magnet synchronous motor |
| CN109638998A (en) * | 2018-12-04 | 2019-04-16 | 珠海格力电器股份有限公司 | Motor rotor, motor and electric automobile |
| CN109638998B (en) * | 2018-12-04 | 2024-05-07 | 珠海格力电器股份有限公司 | Motor rotor, motor and electric automobile |
| CN110336396A (en) * | 2019-07-19 | 2019-10-15 | 合肥巨一动力系统有限公司 | A kind of non-rare-earth electric motor rotor structure of new-energy automobile |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108599418B (en) | Rotor core of magnetic circuit series type hybrid permanent magnet controllable flux motor and motor | |
| CN102761187B (en) | Motor rotor and built-in type permanent-magnet motor | |
| US20140167550A1 (en) | Motor rotor and motor having same | |
| CN108110980A (en) | Mid-series type has the adjustable flux electric machine of hybrid permanent magnet of passive adjustable magnetic magnetic barrier | |
| CN106712425A (en) | Permanent magnet synchronous motor for compressor | |
| CN103441592A (en) | Novel magnetic flux adjustable permanent magnet synchronous motor | |
| CN101621234A (en) | Magnetic flow switching type axial magnetic field magnetoelectric machine with middle stator structure | |
| CN106026585B (en) | Increase U-shaped adjustable flux electric machine built in magnetic-type | |
| CN106169822A (en) | Motor and rotor structure thereof | |
| CN108808910B (en) | Built-in hybrid permanent magnet motor | |
| CN105914984B (en) | A kind of strong magnetic-type permanent magnet synchronous motor of change magnetic flux- | |
| CN105914921A (en) | Adjustable-magnetism permanent magnet synchronous motor rotor with variable q-axis inductance | |
| CN205377491U (en) | Electric motor rotor and permanent -magnet machine | |
| CN108777518A (en) | A kind of rotor structure of the few rare-earth permanent-magnet electric machine of asymmetric mixing | |
| CN105914927A (en) | Magnetic increase built-in V-shaped adjustable flux motor | |
| CN206077099U (en) | Motor and its rotor structure | |
| CN108336845A (en) | Rotor structure, permanent magnetism assist in synchronization reluctance motor and electric vehicle | |
| CN100454715C (en) | Self-magnetizing motor and its stator | |
| CN109951039B (en) | Built-in inverse W-shaped mixed permanent magnet adjustable flux permanent magnet synchronous motor | |
| CN106787310A (en) | A kind of magnetic-field-enhanced Consequent pole permanent magnet motor | |
| CN107968502A (en) | Motor rotor and permanent magnet motor | |
| CN109802541A (en) | The double V-shaped adjustable magnetic flux memory motor of hybrid permanent magnet | |
| CN106208580B (en) | Increase the adjustable flux electric machine of "-" type built in magnetic-type radial direction | |
| CN106936234A (en) | Rotor and magneto | |
| CN110635641B (en) | Axial magnetic field reverse salient pole permanent magnet synchronous motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170707 |